George r



(No Model.)

G. R. LAIDLA W. DEVICE FOR CONVERTING MOTION.

No. 605,558. Patented June 14, 1898.

INVENTUR. 5y f a A TOR/YE).

WITNESSES I c.

A UNITEDQSTATES" PATENT OFFICE.

GEORGE R. LAIDLAW, OF MARION, INDIANA, ASSIGNOR OF TlVO-FIFTTIS TO LEE STEVENS,

'oE SAME PLAoE.

DEVICE FOR CONVERTING MOTION.

SPEGIFIGATIONi fOrming part of Letters Patent No. 605,553, dated. a... 14, 1898.

Application filed October 20, 1897. Serial No. 655,795. 7 (No model.)

To all whom it may concern.-

Be it known that I, -GEORGE R. LAIDLAW, a citizen of the United States, residing at Marion, in the county of Grant and State of Indiana, have invented a new and useful Device for Converting Motion, of which the following is a specification. r j i This invention relatesto a new and useful improvement in devices for converting motion; and it consists in the Construction and arrangement of parts hereinafter described, and definitelypointed outin the claims.

The aim and purpose of this invention is to construct a device whereby a reciprocating motion can be changed toarotary motion. This invention furthercontemplates the construction of a device that not only converts the reciprocating motion to a rotary motion, but at the same time largely increases the power of the rotary motion.

A further object is to so construct the device that the direction of therotary motion can be reversed independently of the direction of the reciprocating motion-that is to say, that the reciprocating motion is always in one direction andthat the rotary motion is reversed independently-of the reciprocating motion. 1

A still further object is to construct a device which can be operated by a small amount of power, easily controlled,and cheaply manufactured.

These and other objects not hereinbefore mentioned are accomplished by the construction illustrated in the accompanying drawings, wherein like letters of reference indicate corresponding parts in the several views, and

in which- Figure 1 is a side elevation of my improved device. Fig. 2 is avertical section on the line a a, Fig. 1. Fig. 3 is a section on the line b b,

; Fig. 4;.and Fig. 4 is adetail view of the clutch-shoe. r

In the drawings, A designates a pulley,which is supported on the axle or support D. The pulley A can be either rigidly orloosely supported on the axle, as desired; If supported rigidly on the axle, the axle will turn and the power will be taken from the axle. If loosely supported on the axle, the power can be taken direct from the pulley by means of a belt,

1 which it is not deemed necessary to show.

ciprocating motive power. This reciprocat- I ing motive power is not shown, as it is evident that any suitable sourceof power can be used. --The upper end of the arm or lever Chas pivoted to it a connecting-rod O. The opposite end of this rod is pivoted to a rockarm L. This rock-armis pivoted to the framework, as shown at M, and has its opposite end pivoted to the connecting-rod N, which is pivoted to the lever B at NS all as shown in Fig. 1. It will thus be seen that the lever O is moved by the lever B, and by referring to the arrows, Fig. 1, it will be seen that the movement of the lever O is at all times directly opposite the movement of the lever B.

Pivotally secured to the lower ends of the lovers B G are the clutch-shoes E, as clearly shown in Fig. 2. Each lever is provided with two's'uch shoes, and the shoes of each lever extend in opposite directions, as shown in Fig. 1, and normally will rest and bear against the inner surface of the pulleyA. The.bearing-faces of the clutch-shoes E are provided with the portions F, as shown in Fig. 4, which can be made of compressed paper or other suitable frictionable material. The portions F are secured to the shoe by'means of bolts F. The shoes are provided with the upwardly-extending flanges E, which are provided with'the apertures E, through which a bolt E passes to pivotally secure the'shoes to the levers. As will be seen by referring to Fig. 1, the shoes are only secured to the levers at one end, so that the free ends of the shoes will normally bear against the pulley.

l-I designates shifting rods which are slidingly secured in the boxes I, which are supported by the pieces R of the supportingframe. There are two of theserods one on each side of "the pulley,'as shown in'Fig. 2. J designates 'a'reversing-lever which is pivoted and fulcrumed on the standard R on the frame. The lower end of the reversing-lever ispivotcd to the cross-piece K, connecting the shifting rods by means of the elongated slot K, so that when the lever is moved the rods are either moved to the right or left. Rigidly secured to the rods H are the shifting or reversing links G. The free ends of the shoes E are secured to the links by means of the pins Q on the shoes. The pins are provided with the antifriction-roller Q. The slot in the links are so shaped that the pins Q can describe the necessary are of a circle when it is desired that the shoe will bear against the pulley, and the links are so positioned on the rod II that when one shoe is in operative position the oppositely-arran ged shoe on each lever will be held from contact with the pulley, and therefore not in operative position.

y referring to Fig. 1 it will be seen that the links are so positioned that the right-hand shoe is in operative position and that the lefthand shoe is not. The right-hand shoe on the opposite side of the pulley is also in operative position, while the left-hand shoes are both out of position. Now when motion is imparted to the lever B the lever C will move in the opposite direction, as before described. hen the lever B is moving in the direction of the arrow, Fig. 1, the right-hand shoe will bear against the inner surface of the pulley and rotate the pulley in the direction of the arrow. \Vhen the lever has reached the limit of its movement and moves in the opposite direction, then the lever O, carrying the shoe on the opposite side of the pulley, will exert power and continue to rotate the pulley, while the shoe pivoted to the lever B is loosely sliding over the inner surface of the pulley to its initial position. It will thus be seen that when the levers are being actuated the shoes are continually bearing against the pulley, rotating the same, and that the power is alternately exerted on opposite sides of the pulley.

lVhen it is desired to change the direction of the pulley, the lever J is reversed, sliding the shifting rods II to the left and bringing the left-hand shoes into operative position and lifting the right-hand shoes out of contact with the inner surface of the pulley. It will thus be seen that the movement of the pulley can be readily reversed by simply reversing the lever J, and that it is not necessary to reverse the movement of the reciprocating motive power. 'When it is desired to disconnect the pulley from the reciprocating power, the lever J is brought to an upright vertical position, thereby disconnecting all of the shoes from the pulley and allowing the pulley to rotate independently of the levers, so that the levers can continue to be in motion and the pulley at a standstill or moving at a greater or less speed. By this arrangement it makes the device especially desirable and useful for hoisting purposes where it is desirable to drop the load quickly and without stopping the engine. It will also be readily noticed that it is adaptable to a great variety of uses where it is necessary to reverse the motion or disconnect the driving power from the motive power.

By pivoting the shoes at only one end to the levers the free ends will have a tendency at all times to bear against the inner surface of the pulley, and by providing the curved links engaging the free ends of the shoes the links will act as a guide and increase the frictional contact as well as disengage the shoes when slid over.

It will be noticed by referring to Fig. 4: that the shoe is provided with a detachable bearin g-surface and that this detachable portion gradually increases in width toward its free end for the reason that the friction is greater there than at any other point.

I am aware that many minorchanges can be made in the construction and arrangement of parts without in the least departing from the nature and principles of my invention.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device for converting motion, the combination with a pulley, of a lever rotatably secured on the hub of the pulley, oppositely-extending clutch-shoes having one of their ends pivoted to the lever and their free ends adapted to bear against the inner surface of the pulley and adapted to rotate the pulley when the lever is moved in one direction and have a sliding contact with the pulley when the lever is moved in the opposite direction, and means for disengaging one of the shoes or both of the shoes from operative contact with the surface of the pulley.

2. In a device for converting motion, the combination with a pulley, of a pair of reciprocatin g levers, oppositely-extendin g clutchshoes having one end pivotally secured to each lever and adapted to engage the inner surface of the pulley, and means for disengaging all of the shoes or one of the shoes of each lever from operative contact with the inner surface of the pulley.

3. In a device for converting motion, the combination with a rotatable pulley, of a pair of reciprocating levers, oppositely-extending clutch-shoes pivotally secured to each lever and adapted to engage the pulley, and shifting rods engaging the shoes to disengage all of the shoes or one of the shoes of each lever from operative contact with the pulley.

4-. In a device for converting motion, the combination with a rotatable pulley, of a pair of reciprocating levers, oppositely-extending clutch-shoes pivotally secured to the levers and adapted to engage the inner surface of the pulley, shifting rods slidingly secured, and curved links engaging each shoe for disengaging them from operative contact with the pulley.

5. In a device for converting motion, the combination with a rotatable pulley, of a pair of reciprocating levers, oppositely-extending clutch-shoes having one end pivotally secured to the levers and adapted to engage the inner ally secured to the levers, a projection on the opposite ends of the shoes, sliding shifting rods, curved links secured to the rod and adapted to engage the projections on the shoes adapted to guide the shoes into operative contact with the pulleyor disengage them from the pulley.

In testimony whereof I aflix my signature in presence of two Witnesses.

, GEORGE R. LAIDLAW. Witnesses:

DELIGHT SAYLoRs, G. M ELLIOTT. 

